I've been flying QF business the last few years on upgrades, and am very underwhelmed by all this Perry stuff. I don't recall the food in Economy Au-US being that bad to start with, and the business stuff is not great. Everything seems to feature seafood or nuts, am allergic to both, and whatever is safe to eat is really quite disapointing.
Best QF plane food I had was years ago, ADL-CBR after a day of meetings. First, they were very generous with the beer (James Squire) and the dinner was a giant rissole on a bed a mashed potato. Yum! After we landed, and while they attached the plane to the walkway thingy, the back door opened, some groundstaff clumped in, and the hosties pointed them toward their goal which was the oven with some leftover dinners in it. Clearly i wasn't the only one who liked that rissole.